PAPIF_num_counters(3) PAPI PAPIF_num_counters(3)NAME
PAPIF_num_counters -
Get the number of hardware counters available on the system.
SYNOPSIS Detailed Description
Fortran Interface:
#include 'fpapi.h'
PAPIF_num_counters( C_INT numevents )
See Also:
PAPI_num_counters
Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.2.0.0 Tue Jun 17 2014 PAPIF_num_counters(3)
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PAPI_start_counters(3) PAPI PAPI_start_counters(3)NAME
PAPI_start_counters -
Start counting hardware events.
SYNOPSIS Detailed Description
@par C Interface:
int PAPI_start_counters( int *events, int array_len );
Parameters:
*events an array of codes for events such as PAPI_INT_INS or a native event code
array_len the number of items in the *events array
Return values:
PAPI_EINVAL One or more of the arguments is invalid.
PAPI_EISRUN Counters have already been started, you must call PAPI_stop_counters() before you call this function again.
PAPI_ESYS A system or C library call failed inside PAPI, see the errno variable.
PAPI_ENOMEM Insufficient memory to complete the operation.
PAPI_ECNFLCT The underlying counter hardware cannot count this event and other events in the EventSet simultaneously.
PAPI_ENOEVNT The PAPI preset is not available on the underlying hardware.
PAPI_start_counters() starts counting the events named in the *events array. This function cannot be called if the counters have already
been started. The user must call PAPI_stop_counters() to stop the events explicitly if he/she wants to call this function again. It is the
user's responsibility to choose events that can be counted simultaneously by reading the vendor's documentation. The length of the *events
array should be no longer than the value returned by PAPI_num_counters().
if( PAPI_start_counters( Events, num_hwcntrs ) != PAPI_OK )
handle_error(1);
*
See Also:
PAPI_stop_counters() PAPI_add_event() PAPI_create_eventset()
Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.2.0.0 Tue Jun 17 2014 PAPI_start_counters(3)
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